1. To turn the device on, press and hold the Power/Lock key until the screen lights up.
   
2. To turn the device off, press and hold the Power/Lock key.
   
3. Tap Power off.
   
4. If you are unable to turn your phone on, plug the phone into a Power source, and then try again.
   
5. If you are unable to power your device off or if it becomes unresponsive, press and hold the Power/Lock key for 10 seconds, until it reboots.